EP1546424A1 - Revetements et compositions a base de niobium, oxydes de niobium et leurs alliages appliques par pulverisation thermique et leur utilisation en tant qu'agents anti-corrosifs - Google Patents

Revetements et compositions a base de niobium, oxydes de niobium et leurs alliages appliques par pulverisation thermique et leur utilisation en tant qu'agents anti-corrosifs

Info

Publication number
EP1546424A1
EP1546424A1 EP02776627A EP02776627A EP1546424A1 EP 1546424 A1 EP1546424 A1 EP 1546424A1 EP 02776627 A EP02776627 A EP 02776627A EP 02776627 A EP02776627 A EP 02776627A EP 1546424 A1 EP1546424 A1 EP 1546424A1
Authority
EP
European Patent Office
Prior art keywords
niobium
alloys
oxides
thermal spraying
coatings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02776627A
Other languages
German (de)
English (en)
Other versions
EP1546424B9 (fr
EP1546424B1 (fr
Inventor
Luiz Roberto Martins Miranda
Ladimir José CARVALHO
Antônio Carlos GONCALVES PEREIRA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Coordenacao dos Programas de Pos Graduacao de Engenharia da UFRJ
Original Assignee
Coordenacao dos Programas de Pos Graduacao de Engenharia da UFRJ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Coordenacao dos Programas de Pos Graduacao de Engenharia da UFRJ filed Critical Coordenacao dos Programas de Pos Graduacao de Engenharia da UFRJ
Publication of EP1546424A1 publication Critical patent/EP1546424A1/fr
Application granted granted Critical
Publication of EP1546424B1 publication Critical patent/EP1546424B1/fr
Publication of EP1546424B9 publication Critical patent/EP1546424B9/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
    • C22C27/02—Alloys based on vanadium, niobium, or tantalum
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material
    • C23C4/08—Metallic material containing only metal elements
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
    • C23C4/11—Oxides

Definitions

  • This invention refers to the application of niobium-based compositions and coatings, niobum oxides and their alloys capable of association with other oxides and alloys by means of the thermal spraying technique for the purpose of an anticorrosive protection in highly corrosive environments, mainly those wich present high temperatures, show presence of gases such as H 2 S, S0 2 , C0 2 as well as organic and inorganic acids.
  • n° PI 0102414-0 refers to niobium-based compositions and coatings, niobium oxides and their possible associations with other oxides and their use by means of common painting techniques and not by electrodeposition through molten salts or equivalents thereof used in electroplating, it being understood that same is proposed to neutralize the highly corrosive effect of naphthenic acids and sulphur components, which very quickly destroy carbon steel and special alloys such as stainless steel of virtually all chromium alloys and nickel alloys families, and for use not only as a coating in petroleum refining units, but also in industrial units which present similar problems.
  • this invention proposes the use of niobium, niobium oxides, niobium alloys and associations thereof with other metals, alloys or oxides as an anticorrosive coating applied by a thermal spraying technique over carbon steel surfaces and other metallic materials of current use in industrial centers.
  • This invention refers more particularly to formulations comprising the use of niobium and oxides and alloys thereof such as Ni-Nb, Fe-Nb, HNb, among others by granulometric classification that allows their application by a thermal spraying equipment.
  • Boiling point a maximum of 2000°C Density: 4.47-8.0 g/cm 3 % niobium oxide: 99.4 Sulphur pp : 10 Fe ppm: 229
  • Thermal spraying is a set of coating process in which metallic or non-metallic materials in the form of a powder or a wire are molten in the nozzle of appropriate guns, and then projected under pressure towards the surface to be coated. Due to the high pressure, these molten materials come out from the guns as microdroplets which, upon approaching, the substrate become grouped and then are deposited in the form of "flakes", sometimes also called “pancakes". From this moment on, there are depositions of successive layers and thus a ther o-sprayed characteristic coating provided with superposed "pancakes". These flakes are affixed to the substrate by mechanical anchoring processes, and therefore there is the need of a prior preparation of the substrate so as to enable required anchoring conditions.
  • the surface to be sprayed ther ically must be previously cleaned.
  • the cleaning process consists of the following phases:
  • Preheating during its pre-cleaning is, in fact, a cleaning by the action of the flame and its purpose is to provide the burning and volatization * of greases, oils and humidity retained at the metal substrate in the event of failure of the other cleaning methods. It can also be used after the final cleaning so as to reduce all residual tensions (which have an influence upon the adhesion and cohesion of the layer) and to remove any residual humidity.
  • the preheating temperature values depend further upon the material of the layer, of the type of the substrate, and of its physical properties.
  • the coating process refers to the advantage 1 which consists of the application of niobium oxide by thermal spraying to the flame.
  • Example 1 Application of a niobium oxide layer over a 3mm thick carbon steel plate.
  • the surface is blasted, to get it cleaned and to obtain the desired roughness, with white aluminium oxide granulometry 30 alundum 38 A; to obtain the Sa3 cleaning degree by comparison with all surface quality standards as published by NACE RM 01/70 rule.
  • the surface must be heated for removal of humidity; to control the heating so that the temperature is not in excess of 150°C; in the sequence, to apply a pre-layer of Ni, Al and Mo (bonder) agglomerate with a minimum thickness of lO ⁇ m, for the purpose of providing the adherence of the coating.
  • An alternative for the pre-layer of adherence is the 40Al-60Nb agglomerate.
  • Oxygen pressure 2.0 to 4.0 kg/cm
  • Acetylene pressure 0.5 to 1.0 kg/cm 2
  • the deposition rate must be altered.
  • the deposited layer Upon application the deposited layer must have the following characteristics: A - Thickness
  • the adherence value must be between 10 and 40 Mpa.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

L'invention concerne l'application de revêtements et de compositions à base de niobium, des oxydes de niobium et leurs alliages capables de s'associer à d'autres oxydes et alliages au moyen de la technique de pulvérisation thermique, en vue d'engendrer une protection anti-corrosive dans des environnements extrêmement corrosifs, notamment, ceux qui ont des températures élevés, révèlent la présence de gaz, tels que H2S, SO2, C02, ainsi que des acides organiques et inorganiques, typiques des pôles industriels.
EP02776627A 2002-09-06 2002-11-13 Procédé d'application d'un revetêment à base d'un oxyde de niobium par pulvérisation thermique Expired - Lifetime EP1546424B9 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
BRPI0203534-0A BR0203534B1 (pt) 2002-09-06 2002-09-06 processo para aplicaÇço de revestimento À base de nb.
BR0203534 2002-09-06
PCT/BR2002/000152 WO2004022806A1 (fr) 2002-09-06 2002-11-13 Revetements et compositions a base de niobium, oxydes de niobium et leurs alliages appliques par pulverisation thermique et leur utilisation en tant qu'agents anti-corrosifs

Publications (3)

Publication Number Publication Date
EP1546424A1 true EP1546424A1 (fr) 2005-06-29
EP1546424B1 EP1546424B1 (fr) 2009-01-14
EP1546424B9 EP1546424B9 (fr) 2010-02-17

Family

ID=36584266

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02776627A Expired - Lifetime EP1546424B9 (fr) 2002-09-06 2002-11-13 Procédé d'application d'un revetêment à base d'un oxyde de niobium par pulvérisation thermique

Country Status (9)

Country Link
US (1) US7651731B2 (fr)
EP (1) EP1546424B9 (fr)
AU (1) AU2002339277A1 (fr)
BR (1) BR0203534B1 (fr)
DE (1) DE60230932D1 (fr)
DK (1) DK1546424T3 (fr)
ES (1) ES2321073T3 (fr)
PT (1) PT1546424E (fr)
WO (1) WO2004022806A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1618224A1 (fr) * 2003-04-28 2006-01-25 Coppe/Ufrj - Coordenacao Dos Programas De Pos Graduacao De Engenharia Da Universidade Federal Do Rio De Janeiro Pulverisation thermique avec des oxydes de niobium

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2452763A1 (fr) 2008-03-05 2012-05-16 Southwire Company Moule au graphite doté d'une couche de protection au niobium et méthode correspondante de moulage sous pression
US8478538B2 (en) * 2009-05-07 2013-07-02 Nellcor Puritan Bennett Ireland Selection of signal regions for parameter extraction
PL2556176T3 (pl) 2010-04-09 2020-08-24 Southwire Company, Llc Ultradźwiękowe odgazowywanie stopionych metali
US8652397B2 (en) 2010-04-09 2014-02-18 Southwire Company Ultrasonic device with integrated gas delivery system
DE102011056761A1 (de) 2011-12-21 2013-08-08 Leibniz-Institut Für Neue Materialien Gemeinnützige Gmbh Pigmentiertes, feinstrukturiertes tribologisches Kompositmaterial
WO2013091685A1 (fr) 2011-12-21 2013-06-27 Leibniz-Institut Für Neue Materialien Gemeinnützige Gmbh Matériau composite hautement structuré et procédé de fabrication de revêtements de protection pour les substrats se corrodant
JP5927587B2 (ja) 2011-12-21 2016-06-01 テナリス コネクションズ リミテッド 石油及び／又はガス適用の耐腐食性機器
US9528167B2 (en) 2013-11-18 2016-12-27 Southwire Company, Llc Ultrasonic probes with gas outlets for degassing of molten metals
US10233515B1 (en) 2015-08-14 2019-03-19 Southwire Company, Llc Metal treatment station for use with ultrasonic degassing system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9426257D0 (en) * 1994-12-24 1995-03-01 Rolls Royce Plc Thermal barrier coating for a superalloy article and method of application

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004022806A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1618224A1 (fr) * 2003-04-28 2006-01-25 Coppe/Ufrj - Coordenacao Dos Programas De Pos Graduacao De Engenharia Da Universidade Federal Do Rio De Janeiro Pulverisation thermique avec des oxydes de niobium

Also Published As

Publication number Publication date
DE60230932D1 (de) 2009-03-05
US20060127577A1 (en) 2006-06-15
DK1546424T3 (da) 2009-03-30
US7651731B2 (en) 2010-01-26
WO2004022806A1 (fr) 2004-03-18
ES2321073T3 (es) 2009-06-02
PT1546424E (pt) 2009-03-24
AU2002339277A1 (en) 2004-03-29
EP1546424B9 (fr) 2010-02-17
BR0203534A (pt) 2004-08-10
BR0203534B1 (pt) 2013-05-28
EP1546424B1 (fr) 2009-01-14

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